Improving QoS of IPTV and VoIP over IEEE 802.11n

被引：5
|
作者：
Saleh, Saad [1 ]
Shah, Zawar [2 ]
Baig, Adeel [1 ,3 ]
机构：
[1] Natl Univ Sci & Technol, Sch Elect Engn & Comp Sci, Islamabad, Pakistan
[2] Whitireia Community Polytech, Informat Technol, Auckland, New Zealand
[3] Al Yamamah Univ, Coll Comp & Informat Syst, Riyadh, Saudi Arabia
来源：
COMPUTERS & ELECTRICAL ENGINEERING | 2015年 / 43卷
关键词：
IPTV; VoIP; DCCP; TFRC; Multi-casting; TFMCC;
D O I：
10.1016/j.compeleceng.2014.10.017
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Tremendous growth rates of Internet Protocol Television (IPTV) and Voice over Internet Protocol (VoIP) have demanded the shift of paradigm from wired to wireless applications. Increased packet loss with continuously varying wireless conditions make the transmission a challenging task in wireless environment. Our study investigates and proposes improvement in the transmission of combined IPTV and VoIP over the IEEE 802.11n WLAN. Our major contributions include the analytical and experimental investigations of (1) transport layer protocol UDP/TFRC for IPTV and VoIP, (2) optimal physical layer parameters for IPTV and VoIP, (3) proposition of wireless enhancement of TFMCC (W-TFMCC) to enhance the capacity and Quality of Service (QoS) of wireless IPTV and VoIP. Analytical and experimental evaluations show a 25% increase in capacity using TFRC with 167% more bandwidth share to TCP. Our study shows that use of W-TFMCC with optimal parameters can enhance IPTV and VoIP capacity by 44%. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：92 / 111
页数：20
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